Posts Tagged ‘Know’
Know more about your computer Keyboard
Article by Ketki Dhawale
A computer keyboard is an input device that connects to your computer and sends signals between the present and the computer. In this article we will explore technology keyboard with different keyboard layouts, options and design.
What is a Computer Keyboard?A computer keyboard is an input device that connects to your computer and sends signals between the present and the computer. Using a keyboard, a person can write a document, use keyboard shortcuts, access menus, and play and perform many other tasks. Keyboards can have different keys depending on the manufacturer, the operating system they are designed for and if they are attached to a desktop or a portion of a laptop. But for most, these keys, also called as keycaps, same size and shape from keyboard to keyboard. They are also located a similar distance from each other in a similar pattern.How Computer Keyboards Work?When you look the alternatives that are available for computer keyboards, it is difficult to believe that their original design came from mechanical typewriters that didn’t even need electricity. But no matter how many bells and whistles they offer, most keyboards operate using similar technology. They use switches and circuits to translate the keystrokes of a person in a signal that the computer can understand.
Layout:Computer keyboards are an input device. They place information that someone wrote a program on your computer. Most keyboards have between 80 and 110 keys. The numbers and letters on the keyboard displays the keys – these are the buttons that are pressed when a person types. The arrangement of numbers and letters are the same on all keyboards and called as QWERTY. Key matrix:
Inside, the keyboard is like a mini-computer and consists of the processor and circuits. These data can be transferred to the processor inside the computer. Inside, the processor in the array of live keyboard key. The fundamental matrix is a network of circuits. These circuits are individually set for each key. When the button is pressed, it pushes the switch to the circuit is the key causes an electric current through the circuit and the processor. When the current passes, the switch vibrates, signaling the processor to read.
Keymap:
The circuit is closed when you press a key. Closing the signal processing circuit to read the keymap stored there. The processor uses the coding scheme, sometimes called the Character Map to find the key that closes on the board. Using the map key, the processor can tell the keyboard what letter is pushing and if it should be a capital or lower depending on whether the shift key is pressed.
Communication:The keyboard connects to your computer for five pin male connector or PS / 2. Keyboards and computers work together to form a double sense. This means they can send data to each other. These two lines are parallel to the keyboard clock line and data line from the computer. Both lines will be used, or large, in order to send data to the keyboard. The computer sends a signal via the clock line of the keyboard through it you know that the line is clear to send. If the line is not clear, the keyboard to keep the data until the line opens. When the line is small, the keyboard from the computer waits for the command. When the computer wants to send data to the keyboard, brings the data line low and the clock. This means that the keyboard does not send the message at the same time.
About the Author
Penta IT Solutions is one of the leading http://www.pentasolutions.com.au/”>computer maintenance & laptop repair offering a complete line of software, hardware and laptop support . For more information visit http://www.pentasolutions.com.au/
This is the promo video for the TypeMatrix 2030 computer keyboard. It has many brilliant changes, such as moving the Enter and Backspace keys to the center, so you can use your pointer fingers instead of killing your pinkies all the time. Visit typematrix.com for more info. To some of the commenters “2030″ is the model number of the keyboard, not the year!
A Brief History of Computers – How Much Do You Know About That?
Write-up by Ivy Shawn
Computer is a machine comparable to Tv in some way, but a lot much more advanced than the tv. In reality, it is very impossible for a person to know absolutely nothing about computers in the age of technology. Normally, there is at least 1 pc at property for every household.
It really is accurate that most individuals have realized the importance and wonderful benefits of computers, as nicely, they know how to make most use of their computers in their life. Nevertheless, are they clear about the history of computers?
Starting with a huge shape as massive as a house, computers today have created to be as modest and multi-functional as possible to be convenient for men and women to use. Throughout this evolution, we can categorize the computers into five generations, with distinct establishing periods.
Very first Generation (1945-1959) Vacuum Tubes
Relays had been replaced by vacuum tubes which had no moving parts hence quicker, eventually hybrids of both were built. The initial electronic computers had been the COLOSSUS (1943 – though not publicly-acknowledged) and ENIAC (1946) which contained 18000 vacuum tubes and 1500 relays. Also notable was UNIVAC which became the initial commercially accessible personal computer.
Second Generation (1960-1965) Transistors
Vacuum tubes replaced by transistors (Invented at Bell Labs in 1948). High Level programming languages developed FORTRAN and COBOL amongst other people. Transistors had been considerably smaller, and less costly to make and far much more trustworthy than valves.
Third Generation (1965-1971) Integrated Circuits
Machine speeds went from microsecond to the picoseconds (trillionth) range. Terminals replaced punched cards for information entry. This era saw the rise of Operating Systems and mass production of circuitry. IBM introduced compatible household of computers
Fourth Generation (1973-) VLSI – Extremely Significant Scale Integration
Allowed thousands of transistors to be incorporated in a chip giving rise to the microprocessor- a processor on a chip. These reduced the value of computers giving rise personal computing.
The 1990s saw the Fourth Generation advance into ULSI (Ultra Big Scale Integration) with millions of transistors per chip. In 1965 Intel’s Gordon Moore predicted “the number of transistors on an IC wills double every single 18 months.”
Fifth Generation (1985- ) Parallel Processing and Networking
Nonetheless a debated generation. How high finish machines (e.g. internet servers) can have several CPUs and inter-connectivity among computers networks!
The evolution of computers also symbolizes the development of technologies. Needless to say, the more advanced society is, the far more progress will be made to the computers.
About the Author
The author is a shopping enthusiast who constantly finds goods on the internet. And dealextreme is the most frequent website she visits to. Besides, you can discover far more data about the author from pr80.com.
The benefits of getting employed computers. Understand ideas on why to acquire employed computers rather of new in this free video on consumer electronics. Professional: Don Procunier Bio: Don Procunier has owned the Friendly Pc franchise in Cottonwood AZ for almost 2 years. Filmmaker: Chuck Tyler
Video Rating: five / 5